Home / 156,781.42-216,358.77-85,160.86

Finding the Fourth Proportional to 156,781.42, 216,358.77 and 85,160.86

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Solution

The fourth proportional to 156,781.42, 216,358.77 and 85,160.86 is: 117,522.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.42 : 216,358.77 = 85,160.86 : x
  2. Step 2: Convert to fraction form
    156,781.42/216,358.77 = 85,160.86/x
  3. Step 3: Cross multiply
    156,781.42x = 216,358.77 × 85,160.86
  4. Step 4: Simplify right side
    156,781.42x = 18,425,298,921.74
  5. Step 5: Solve for x
    x = 18,425,298,921.74/156,781.42
  6. Step 6: Final answer
    x = 117,522.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.